Allosaurus

Allosaurus was a predatory therepod dinosaur, of the Carnosauria family. Allosaurus had a very basic carnivore design: it was bipedal, but not fully erect, with a thick, powerful tail, and large head. Size estimates are rough at best, with most experts placing the Allosaurus at about 28 to 40 feet long, 7 to 13 feet tall, and weighing in between 1.5 to 5 tonnes.

Allosaurus lived in the western United States, around 155-140 million years ago. This indicates a mixed, forest and plains habitat, likely very humid and wet, but also very hot. Allosaurus was a large carnivore in a world of large animals, mainly his prey. Certain research shows that Allosaurus was a pack hunter, preying on large, tough animals such as Apatosaurus and Stegosaurus.